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16715

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This article was originally published as: Wang, K., Nirmalathas, A., Lim, C., Skafidas, E., & Alameh, K. (2013). Free-space optics for high speed reconfigurable card-to-card optical interconnects. In Proceedings of SPIE: Nonimaging Optics: Efficient Design for Illumination and Solar Concentration X. Roland Winston, Jeffrey Gordon (Eds). Volume 8834 (pp. 88340I-1-88340I-6). San Diego, USA. SPIE. Copyright 2013 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. Original article available here

Abstract

High-speed card-to-card optical interconnects are highly demanded in high-performance computing and data centers. Compared with other solutions, free-space optical interconnects have the capability of providing both reconfigurability and flexibility. In this paper we propose and experimentally demonstrate a free-space based reconfigurable optical interconnect architecture and it is capable of connecting cards located both inside the same rack as well as in different racks. Results show that 3xiO Gb/s data transmission is achieved with a worst-case receiver sensitivity better than -9.38 dBm.